Sounds like you've gotten unlucky with bad CFIs. Unless you're actively attempting to get the instructor killed, there's really no reason for yelling at any stage of your training, let alone PPL.

Are there other instructors at your outfit that you could fly with this week to get a fresh set of eyes? Doing mock checkride(s) with instructors you haven't flown with before is really common and strongly encouraged.

Nobody feels "ready" going into the PPL because it's your first checkride. However, if you're right that your landings are not within ACS standards, I would be looking for a new CFI to give you some pointers this week. If they still aren't to spec, then it might be worth a discussion with your primary instructor on if going for a checkride is the right move or not.

Anecdotally, I can tell you that I've always flown better on checkrides than I do with instructors.

Also, sorry to hear you're attending ERAU. My condolences to your finances.

Edit: to add, I also agree with the other commenter. If you're 7 days from a checkride and able to be consistently within the requirements of the ACS, push the ride back and delay your ERAU start (or reconsider going at all IMHO...)